19730229730 has 16 divisors (see below), whose sum is σ = 35539119360. Its totient is φ = 7886601712.

The previous prime is 19730229691. The next prime is 19730229731. The reversal of 19730229730 is 3792203791.

It is not an unprimeable number, because it can be changed into a prime (19730229731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671164 + ... + 699943.

It is an arithmetic number, because the mean of its divisors is an integer number (2221194960).

Almost surely, 2^19730229730 is an apocalyptic number.

19730229730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19730229730 is a deficient number, since it is larger than the sum of its proper divisors (15808889630).

19730229730 is a wasteful number, since it uses less digits than its factorization.

19730229730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372553.

The product of its (nonzero) digits is 142884, while the sum is 43.

The spelling of 19730229730 in words is "nineteen billion, seven hundred thirty million, two hundred twenty-nine thousand, seven hundred thirty".